(!!!!) (Best Pair #2) 01A Cunningham NOS 1940 era boxes were factory sealed (3.6ma and 3.5ma) (same Gm)

1 pair) 01A Cunningham NOS 1940 era boxes were factory sealed - gold colored printing 1 tube) 3.6ma and Gm=800 1 tube) 3.5ma and Gm=800   NOS Ma = 2.5-3ma+ NOS Gm = 700-900   (Filament=5V @ 250ma, Vplate max=135V) - Crosley C5 1926   Class A Amplifier:-----------------Plate Voltage = 90 VGrid No. 1 Voltage -4.5VAmplification Factor (mu) = 8Plate Resistance (approx) 11KohmsTransconductance = 725mhosPlate Current = 2.5 mA